Defoliation by Winter Moth - A Pest New to the Pacific Northwest
A discussion about the history and discovery of the winter moth, Operophtera brumata, in Oregon State University and Oregon Department of Agriculture Entomology collections taken from the Portland, OR area. Appearance, damage, and life history are addressed.
To view the article, click on the link attachment.
Mar.-April 1979 Vol.3, Issue 2 Pages21-22
Richard Penrose Entomologist Oregon Department of Agriculture Plant Division, Ag. Building Salem, OR 97310